Armature winding machine



April 26, 1949.

E. D. GREEN ARMATURE WINDING MACHINE Filed Aug. 25, 1946 3 Sheets-Sheet 1 Q11 ll- Edwin D. 657%?6'71 April 26, 1949. v E. D. GREEN 2,458,365

ARMATURE WINDING MACHINE Filed Aug. 23, 1946 I 3 Sheets-Sheet 2 ain 2'71 fl Gresn April 26, 1949. E. D. GREEN ARMATURE WINDING MACHINE 5 Sheets-Sheet 3 Filed Aug. 23, 1946 3 rvu cm l'ot/ Edi V2 77 QTY-3671,

Patented Apr. 26, 1949 UNITED STATES PATENT OFFICE ARMATURE WINDING MACHINE Edwin D. Green, Hutchinson, Kans. Application August 23, 1946, Serial No. 692,530

2 Claims. 1

The invention aims to provide an exceptionally simple and inexpensive, yet a highly efiicient machine which may be easily and rapidly operated manually to wind the coils of armatures in the armature slots, the machine being particularly adapted for use in rewinding burned-out armatures of automobile generators and starters.

Figure 1 of the accompanying drawings is a front elevation, partly in section, showing the machine in operation.

Fig. 2 is an end elevation as viewed from the right of Fig. 1.

Fig. 3 is a detail vertical longitudinal sectional view on line 3-3 of Fig. 2.

Fig. 4 is an elevation of one of the armature holding seats and its wire-guiding wings, as indicated by line 44 of Fig. 3.

Fig. 5 is a detail horizontal section on line 5--5 of Fig. 3.

Fig. 6 is a detail vertical section on line 66 of Fig. 2.

In the drawings above briefly described, a preferred construction has been illustrated and while that construction will be rather specifically described, minor variations may of course be made within the scope of the invention as claimed.

A horizontal base I is shown, which may well be the top of a table or bench Suitably secured to and projecting upwardly from this base, are two posts I2 and I3 upon which two horizontal bearings I4 and are mounted in axial alinement. One shaft l6 is mounted in the bearing I4 for rotation and axial sliding, and another shaft IT is rotatably mounted in the bearing |5, this shaft being normally held against axial shifting. The inner end of the shaft 16 is provided with an arcuate armature seat Hi and a similar seat I9 is provided on the inner end of the shaft I1, said seats being cooperative in holding an armature 20 to be wound. The shaft Hi and seat I8 are urged toward the shaft l1 and seat I9 by means of a coiled compression spring 2| to grip the armature 2D and said shaft I6 is equipped with a hand-crank 22 by means of which it may be rotated the desired number of turns to complete any coil, and then stopped. The shaft I6 is then shifted away from the shaft I! by means of a foot pedal 23, to release the armature 20 sufficiently to permit it to be turned to properly position the next pair of slots to receive their respective windings. The seat I8 is provided with two ribs 24 for successive reception in the armature slots to properly position the latter, and said seat |8 also carries two substantially elliptical wings 25 to guide the wires into said slots.

The spring 2| is confined within the bearing l4 and thrusts against a collar or the like 26 on the shaft H5. The spring reacts against a suitable abutment which may well be one of a pair of bushings 21 in said bearing M. A bushing 28 is preferably included also in the bearing l5, and both bearings have appropriate oil holes 29.

The hand crank 22 has a hub or collar 30 secured on the outer end of the shaft l6 by a set screw or the like 3|. The forked end 32 of a suitable lever 33 is cooperable with this hub or collar 38 to axially slide the shaft IS in armature-releasing direction when the pedal 23 is depressed. The lever 33 is suitably mounted at 34 upon the posts l2 and is connected by a cable or the like 35 with a lever 36 carrying the pedal 23. When this pedal is depressed, the shaft I6 is shifted away from the shaft to permit placing of an armature between the two seats I8, and when the pedal is released, the spring 2| forces shaft l6 again inwardly to cause the two seats !8 and I9 to grip said armature. Also, after the coil has been wound in one pair of armature slots and the next pair is to be presented for wire reception, slight depression of the foot pedal will release the armature sufiiciently to permit it to be turned to the proper position by hand, and the armature will be held against slipping from any of its proper winding positions by means of the ribs 24.

In the present showing, the outer end of the bearing l5 has a reduced extension 31 upon which a cap 38 is threaded adjustably, a lock nut 39 being shown for said cap. By loosening this look nut and turning the cap 38 in the proper direction, the shaft I! may be adjusted toward the shaft It. This lessens the distance which the spring 2| must move the shaft IS in order to grip the armature, and consequently increases the grip upon said armature, should this be necessary. It is inadvisable, however, to grip the armature with more force than necessary, due to the added power necessary to retract the shaft l6 against the spring 2| and the consequent additional wear on the shaft-shifting elements. After the cap 38 has been adjusted, the lock nut 39 is of course tightened to maintain that adjustment.

Two posts 40 are secured to and rise from the rear portion of the base l0, said posts having upper and lower bearings 4| and 42 to receive shafts 43 and 43' upon which the spools 44 and 45 are rotatably mounted. One of these spools carries the usual colored wire 46 and the other carries the usual white tracer wire 41. Friction brake means are provided for the two spools, and two sheaves 48 and 49 are employed to guide the wires from the spools to the armature 20, and the sheave 49 is so located that the wires must extend upwardly from this sheave in range of the wings 25, as shown in Figs. 1 and 2. The inner edges of these wings are located truly along one side of the armature slots to receive the windings, and as the shaft l6 is-rotated, said wings guide the wires into the slots with precision. Whenever the cap 38 is adjusted to vary the distance which the spring 2| will force the armature seat toward the left, it may be advisable to similarly adjust the sheave 49, and provisionis thera fore, made for this purpose. In the present disclosure, the sheave 49 is rotatably mounted upon the intermediate portion of a shaft 50,. between appropriate collars This shaft is threaded Hthrough the upperfends of two posts 52 which are secured to the base 10, and locknuts -Bs are pro- -sv'ided. :This construction permits axial adjust ment 0f the sheave as as desired.

.:One end flange of the spool s4 is formed-with ameripheral groove 54, and another groove 55 is utor-med: in one end'fiange of the spool 45. Two coiled'tension springs-56 and 51 are engaged with these grooves respectively, and have their ends suitably anchored; whereby said-springs form ef- -fective ifIiCtiOIl brakes for giving the desiredresistance to unwinding of the wires. Turn-buckles "n58 and 59 are preferably provided, whereby the tension of the'springs may beadjustedas ren quired.

Eromthe foregoing; taken in connection with Y the accompanying drawings, it will be seen that aa-anovel and advantageous construction: has been prov-i dedwfor easily and rapidly winding armautures. The winding operations are'preferably v:3performeduwith the aid of aslotted sleeve 60 nlslippedonto one end of the armature shaft '61. .nt the'start of No. 1 winding and after the comz=pletion of any other winding, the wires are en- .wgaged with-the slots of the sleeve, providing 011 ample :lengths'of-wire'toI be later cutand conu-nected in the usual way with the commutator while-preferences have been disclosed;- attenttion: is again invited to the possibility: of making, ---1variations-within 'the scope of the inventionas claimed.

1 I- cla-im: 1. An armature windervcomprising a base, two

rmernen'ds of said shafts, spring means associated iwithisaid-one shaft for axially shifting it toward said-second shaft to cause gripping of an armature by said seats, a hand crank on said :one shaft ufor rotating-it to wind. the coils-of wire in the aarmature-slots, guide wings on one-0f said-seats "spring means when the armaturelis to be turned about its own axis after winding any "coil, means on one of said armature seats for successive re- "ception in the armature slots to hold the armature against accidental turning about its own Maxis, thrustzmeans associated with the bearing of said second shaft for adjusting said second shaft toward said one shaft to decrease the dis- -=tance which said spring means must shift said one shaft and thereby increase the grip on the armature when desired, and means for adjusting 2. In an armature windentwoaxiallycalined hearings, one shaft: :rotatable and axially shiftable in one of saidbearings; a second :shaft ro- A tatable and axially shiftable. inv the other of said bearings,- armature seats on the innerrends ofasaid shafts and having wings..for...guiding..the.wires Uintolthe. armature slots, spring. means for-axially shifting said one shaft toward said second shaft 1 to cause gripping of: an armature .by-said seats,

thrust means associated'with the-bearing of said secondshaftfor adjustingflthis shaft toward said .one. shaft to decreasewtheidistance whichssaid spring means must shift 'said one shaft and thereby increasethe grip on .-the armature-when desired, means whereby said one shaft .may be shifted awayfrom said second shaft, means whereby one of said shafts may beLdriven, a sheave from whichthe wires extend upwardly to ..the armature, and means for adjusting said sheave in the same direction inwhich said second shaft is adjusted, to keep thewires in proper relation with said wings.

' :EDWIN D. GREEN.

REFERENCES EITED filhe following references are of record in the .i file of :this patent:

' UNITED STATES PATEN-IS 

